Greenhouse pollution-free high-yield cultivation

2019-03-24 21:32:42

æž¸æž is a perennial deciduous shrub of the Solanaceae family. Its shoots and leaves (also known as steamed bread) are used for vegetable consumption. They can be fried, broiled, souped, etc. They are nutritious, delicious, and refreshing, and are favored by consumers. Lishui County, Jiangsu Province began to introduce planting in 2002. The products are mainly sold to large and medium-sized cities such as Shanghai, Nanjing, and Wuxi, which are in short supply in the market and have achieved high economic returns. The pollution-free and high-yield cultivation techniques in the greenhouse are described as follows: 1, choose to use large leafhoppers. The variety is large and green, ovate, about 8 cm in length and 5 cm in width. It has no thorns, light taste, strong resistance, and high yield. 2. Soil preparation and soil selection The land with loose and fertile soil and high dryness is selected for cultivation. The soil shall be cultivated for about 20 days before transplanting. Before ploughing, 5000 kg of fully-fertilized organic fertilizer and 50 kg of compound fertilizer shall be applied per acre, and a rake shall be built 1 week before transplanting, and shall be built into a sorghum with a width of 120 cm, a width of 30 cm and a height of 30 cm. Standard shed 4 ç•¦). In order to facilitate water management, a plastic hose with a diameter of 2.5 cm can be drip-drained in the middle of the concrete. 3. The cultivation method uses direct cutting in Datian and cultivation of greenhouse facilities. Nanjing region can be cut in spring and autumn, spring in mid-February and autumn in mid-August. Collect strong, semi-lignified shoots, cut 12â€“18 cm long cuttings (4â€“6 shoots per cutting), and soak for 24 hours with rooting powder. According to the spacing of 30 cm, spacing 25 cm cuttings, 1-2 per hole, the density of 7000-8000 strains / acre. When the cuttings shoot buds up, can not be inserted, the depth of 5 to 7 centimeters into the soil, after inserting water. 4, field management 4.1 Water and Fertilizer Management After cutting, it usually takes about 10 days in spring and starts to sprout around 8 days in the fall. Wet surfaces should always keep the soil moist to promote the rapid growth of new shoots. Drought or excessive humidity in the field is not conducive to the rooting and budding of cuttings, affecting the yield and quality of earthworms. About 20 days after cutting, 1 500 kg of diluted human feces was applied per acre. After the first harvest, 15 kilograms of urea were planted per acre. After that, one harvest and one topdressing were performed. In the middle of May-June of the following year, after the pruning and cutting of the mulching film, deep-quality, full-quality organic fertilizers are applied between the rows, and 4,000 kg per mu and 30 kg of compound fertilizer are added. 4.2 Temperature Management Litchi twigs are most suitable for the growth of temperature 15-25 Â°C. Before the fall, cover the shed in autumn. In order to ensure the normal listing of Chinese wolfberry on New Year's Day and Spring Festival, from mid-December 10 to late February, a shed in the middle of the greenhouse should be covered to keep the temperature of the shed above 15Â°C. At the same time, the shed film should be uncovered according to the weather conditions. Ensure ventilation and ventilation. In summer, high temperature, the roof should cover the shade net, and sooner or later spray water cooling and moisturizing, creating a suitable growing microclimate, will help improve the quality of loquat. 4.3 During the growth of pruning branches in clear gardens, attention should be paid to clearing field weeds. In general, from May to June each year, it is possible to use the time to clean the pastoral areas and trim branches and leaves. The method is as follows: First, combine the cultivating soil with the cultivator to clean the dead leaves, weeds, and aging mulch in the field; secondly, cut the branches and leaves 12-15 cm above the ground in mid-June. After the pruning in the clear garden, the fertilizer should be deep and cover the new film. 4.4 Diseases and Insect Pests have strong resistance to diseases and lighter diseases. Insect pests are mainly locusts and night moths. Aphids can use 10% of imidacloprid wettable powder, spray control per acre water spray; night moth can be used before the second larvae BT500 times spray control. 5, picking vegetables with 1 time cutting, can be harvested multiple times. After cutting till the first harvest, the interval is 50 days in spring and 40 days in autumn, and it is harvested once every 10 days or so. It is usually harvested once every 15 days in the winter and harvested about 7 days in the summer. Harvesting standards: 8-12 cm long shoots. Harvesting method: Pick up with hand or soon with a knife. May-June is the summer season for summer vegetables. The price of wolfberry is relatively low, and harvesting can be suspended. The average annual output per mu can reach 2500-3000 kg.